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on the lenses that do not have a aperture, you shoot wide open. But I know on canon there is a dof preview. If you hold it down and dismount the lens, it will hold the aperture setting you set with the camera. Not sure if that will work with the nikon's. But seems a allot of work to have 2 cameras just to change the aperture.

Mu-43 Regular

Most Nikon lenses fall into two categories: those that have an aperture ring and those that don't. The AF lenses released in the last few years do not have an aperture ring and referred to as "G-type".

With lenses that have an aperture ring, you just turn the ring.

Novoflex and others make a special adapter that lets you adjust G-type lenses as well. You can't tell exactly what f-stop you're using though (unless you shoot wide open). Without the special adapter, you always shoot closed down, I think, but I haven't tried.

My Voigtlander adapter does not accept G-type lenses. Most of the interesting lenses for m-43 are not G-type. Some exotic G-type lenses would be nice on m-43, but they're way too expensive (such as 24mm f/1.4).

Mu-43 Veteran

I just picked up a Nikon g-m43 adapter, and it has 7 numbered stops on the built in aperture ring. It doesn't tell you what he value of the stop is, but my 50/1.4 has 8 stops in its ring. The adapter seems to give me the same stops for the first 7, and it gives me the minimum aperture if I twist it past the last one. This is my only Nikon lens right now, so I don't know if this is true for all of them, but my adapter lets me know what f-stop I'm on by looking at the number on the ring (0123456) and adding that many stops to the maximum.

Mu-43 Regular

I just picked up a Nikon g-m43 adapter, and it has 7 numbered stops on the built in aperture ring. It doesn't tell you what he value of the stop is, but my 50/1.4 has 8 stops in its ring. The adapter seems to give me the same stops for the first 7, and it gives me the minimum aperture if I twist it past the last one. This is my only Nikon lens right now, so I don't know if this is true for all of them, but my adapter lets me know what f-stop I'm on by looking at the number on the ring (0123456) and adding that many stops to the maximum.

Mu-43 Veteran

The box says "CoYo adapter ring", but I've googled them, and there isn't much out there about them. It's probably a cheap Chinese knockoff of the real thing. I paid about $65US for it, but camera stuff is expensive here in Jakarta. I found a market here with tons of old MF lenses for (relatively) cheap, so I figured it was worth it. The 50/1.4 only cost me $75, which is much less than the 50mm 4/3 available here (the sigma and the oly). Sorry about the photos, crappy webcam shots.